Story

It starts out with Overman Supreme thinking about changing the world to his likings. So he decides to get help from The Nightmare King. Mick Cool and YoshiEgg Nook individually hear about this and decide to stop them, with help from their friends such as The Groo and Micool. But little does Mick and YE know, their friends are being cloned into evil spirit versions of themselves.

Worlds

There are certain worlds you have to go through in order beat bosses, eventually leading to the final bosses.